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| author | Nick Clifton <nickc@redhat.com> | 2017-06-14 16:50:03 +0100 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2017-06-14 16:50:03 +0100 |
| commit | ae87f7e73eba29bd38b3a9684a10b948ed715612 (patch) | |
| tree | 2623d2073e3b3b8ff831da059af8e7d019833d51 /binutils/objdump.c | |
| parent | 6394c606997f88acfc80de4dff33a4ae2de987b4 (diff) | |
| download | gdb-ae87f7e73eba29bd38b3a9684a10b948ed715612.zip gdb-ae87f7e73eba29bd38b3a9684a10b948ed715612.tar.gz gdb-ae87f7e73eba29bd38b3a9684a10b948ed715612.tar.bz2 | |
Fix address violation when disassembling a corrupt binary.
PR binutils/21580
binutils * objdump.c (disassemble_bytes): Check for buffer overrun when
printing out rae insns.
ld * testsuite/ld-nds32/diff.d: Adjust expected output.
Diffstat (limited to 'binutils/objdump.c')
| -rw-r--r-- | binutils/objdump.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/binutils/objdump.c b/binutils/objdump.c index 6dc8318..05402ed 100644 --- a/binutils/objdump.c +++ b/binutils/objdump.c @@ -1918,20 +1918,23 @@ disassemble_bytes (struct disassemble_info * inf, for (j = addr_offset * opb; j < addr_offset * opb + pb; j += bpc) { - int k; - - if (bpc > 1 && inf->display_endian == BFD_ENDIAN_LITTLE) - { - for (k = bpc - 1; k >= 0; k--) - printf ("%02x", (unsigned) data[j + k]); - putchar (' '); - } - else + /* PR 21580: Check for a buffer ending early. */ + if (j + bpc <= stop_offset * opb) { - for (k = 0; k < bpc; k++) - printf ("%02x", (unsigned) data[j + k]); - putchar (' '); + int k; + + if (inf->display_endian == BFD_ENDIAN_LITTLE) + { + for (k = bpc - 1; k >= 0; k--) + printf ("%02x", (unsigned) data[j + k]); + } + else + { + for (k = 0; k < bpc; k++) + printf ("%02x", (unsigned) data[j + k]); + } } + putchar (' '); } for (; pb < octets_per_line; pb += bpc) |